Mortgage Renewal in Canada: Why Signing the First Offer Costs You Thousands

Somewhere in your mortgage’s final year, a letter arrives offering the gentle convenience of signing nothing and changing nothing. That convenience has a price.

The renewal letter is an opening bid

Lenders know most borrowers sign the first offer — it’s frictionless, and inertia is profitable. Posted renewal offers typically run 0.10–0.30% above what the same lender gives new customers. On a $500,000 balance over a 5-year term, each 0.10% is roughly $2,500. The letter banks on you not knowing that.

The 120-day playbook

1. Day −120: note your maturity date, balance, and remaining amortization. Get your lender’s offer in writing.
2. Day −100: collect two competitor quotes (a mortgage broker does this free) or rate-hold a competitor directly.
3. Day −80: return to your lender: “I have X% from [competitor]. Match it or I switch.” Retention departments have authority the letter doesn’t.
4. Day −60: take the best final offer. If switching, the new lender handles the transfer and often covers legal/appraisal fees.

The straight-switch rule changed everything

Since November 2024, uninsured mortgages (20%+ down originally) can switch lenders at renewal without re-passing the stress test — same balance, same amortization. Before this, switching meant re-qualifying at contract + 2%, which trapped anyone whose finances had tightened. That trap is gone; the leverage is now real.

Blend-and-extend: the quiet alternative

Mid-term and rates dropped? Your lender may offer to blend your old rate with current rates into a fresh term — no penalty. Fine when the alternative is a brutal IRD penalty, but the blended rate is rarely competitive with what you’d get breaking and switching. Do the math with the refinance calculator before accepting convenience.

When breaking early actually wins

• Fixed rate: penalty = greater of 3 months’ interest or the Interest Rate Differential. Big-bank IRDs on older high-rate mortgages can reach five figures — get the exact number from your lender, in writing, before deciding.
• Variable rate: penalty = 3 months’ interest, usually a few thousand. Breaking is often cheap.
• Compare penalty + new-term savings precisely — our refinance guide covers IRD math and blend strategies in detail.

Bottom line

Your renewal is the one moment every five years when you hold all the leverage and spend none of it by default. Diarize maturity minus 120 days, collect competing offers, and treat the letter as what it is: the first move in a negotiation, not a bill.